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Treatment method of bipolar substrate coating of lead-acid battery

A treatment method and technology for lead-acid batteries, applied in battery electrodes, bipolar electrodes, secondary batteries, etc., can solve problems such as instability, and achieve the effect of improving electrical conductivity, high electrical conductivity and good stability

Inactive Publication Date: 2021-07-27
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the substrate material of the current bipolar lead-acid battery is unstable under high voltage and strong oxidizing environment, the present invention proposes a treatment method for the coating of the bipolar substrate of the lead-acid battery, thereby improving the bipolar Chemical stability and thermal conductivity of the substrate while improving electrical conductivity

Method used

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  • Treatment method of bipolar substrate coating of lead-acid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Use diamond powder to grind both sides of the Ti-6Al-4V alloy substrate with an average thickness of 2.5mm until a large number of scratches visible to the naked eye appear on the surface of the substrate, and then wash with absolute ethanol to remove the oil phase impurities on the surface, Vacuum drying to obtain the substrate material;

[0036] (2) Place the obtained substrate material in a CVD vacuum deposition chamber, control the vacuum degree of the furnace body at 0.5kPa, and then pass a mixed gas of hydrogen, argon, methane, and borane into the furnace body for plasma vapor deposition , in the mixed gas, the volume ratio of hydrogen, argon, methane, and borane is 400:100:40:15, the gas source flow rate of the mixed gas is controlled at 450 sccm, the deposition temperature is controlled at 850°C, and the deposition is 6h, and then the methane and Borane gas source, and at the same time turn off the deposition equipment, so that the substrate is rapidly coole...

Embodiment 2

[0039] (1) Use diamond powder to grind both sides of the Ti-6Al-4V alloy substrate with an average thickness of 2.2 mm until a large number of scratches visible to the naked eye appear on the surface of the substrate, and then wash with absolute ethanol to remove the oil phase impurities on the surface, Vacuum drying to obtain the substrate material;

[0040] (2) Place the obtained substrate material in a CVD vacuum deposition chamber, control the vacuum degree of the furnace body at 0.3Pa, and then pass a mixed gas of hydrogen, argon, methane, and borane into the furnace body for plasma vapor deposition , in the mixed gas, the volume ratio of hydrogen, argon, methane, and borane is 400:100:35:12, the gas source flow rate of the mixed gas is controlled at 420 sccm, the deposition temperature is controlled at 820°C, and the deposition is 7h, and then the methane and Borane gas source, and at the same time turn off the deposition equipment, so that the substrate is rapidly coole...

Embodiment 3

[0043] (1) Use diamond powder to grind both sides of the Ti-6Al-4V alloy substrate with an average thickness of 2.8mm until a large number of scratches visible to the naked eye appear on the surface of the substrate, and then wash with absolute ethanol to remove the oil phase impurities on the surface, Vacuum drying to obtain the substrate material;

[0044] (2) Place the obtained substrate material in a CVD vacuum deposition chamber, control the vacuum degree of the furnace body at 0.8kPa, and then pass a mixed gas of hydrogen, argon, methane, and borane into the furnace body for plasma vapor deposition , in the mixed gas, the volume ratio of hydrogen, argon, methane, and borane is 400:100:45:18, the flow rate of the gas source of the mixed gas is controlled at 480 sccm, the deposition temperature is controlled at 880 ° C, and the deposition is 5h. After that, the methane and Borane gas source, and at the same time turn off the deposition equipment, so that the substrate is r...

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Abstract

The invention relates to the technical field of lead-acid storage batteries, and provides a treatment method of a bipolar substrate coating of a lead-acid battery, and the bipolar substrate coating is prepared by the following steps: grinding two sides of a substrate by using diamond powder until a large number of scratches appear on the surface, washing and drying to obtain a substrate material, then placing the substrate in a CVD vacuum deposition chamber, introducing mixed gas of hydrogen, argon, methane and borane to carry out plasma vapor deposition, closing methane, borane and deposition equipment, rapidly cooling to obtain a diamond-doped modified polar plate, carrying out a lead electroplating process, polishing, and annealing to obtain the bipolar substrate coating. According to the bipolar substrate coating of the lead-acid battery, the chemical stability and the heat conductivity of the substrate can be effectively improved through the doped diamond film coating on the surface of the substrate, the diamond film coating contains many microcracks, the conductivity can be improved through the filled metal lead, the use performance is good, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a method for treating bipolar substrate coatings of lead-acid batteries. Background technique [0002] Lead-acid battery (VRLA) is a battery whose electrodes are mainly made of lead and its oxides, and the electrolyte is a sulfuric acid solution. In the discharge state of the lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charging state, the main component of the positive and negative electrodes is lead sulfate. In recent years, lead-acid batteries have made great progress in terms of theoretical research, product types and varieties, and product electrical properties. Batteries have played an indispensable role. [0003] However, with the development and industrialization of nickel-metal hydride batteries, lithium-ion batteries and fuel cell technologies, traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/82H01M10/613H01M10/653H01M10/654
CPCH01M4/662H01M4/663H01M4/667H01M4/82H01M2004/029H01M10/613H01M10/653H01M10/654Y02E60/10
Inventor 廖健淞陈庆司文彬李钧
Owner CHENDU NEW KELI CHEM SCI CO LTD
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